Curate, connect, and discover
If Professor Tori/Victoria is actually Maria's as-yet-unnamed sister, I can understand why she doesn't use her last name in formal contexts like the author credit on a book she wrote, considering how Ivo turned out. I mean, if I was an accomplished scientist, I'd sure as hell want my interviews or whatever to be about my accomplishments, not the fact that my cousin is a would-be world-conquering dictator whose arch-nemesis is a hedgehog who goes fast, and that's even before Sonic Forces.
Maybe that's just how the Robotnik family handles the whole "being related to Doctor Eggman" thing, just quietly starting to go by their first names, i.e. "Professor Gerald" (posthumously) or "Dr. Colin" or whatever. "Big the Cat" is good enough for the mobians, why not "Tori the Professor".